When I turn on my PC, it starts alright but within a few minutes it starts to work too slowly, not allowing me to do anything, not even opening an Internet browser. Sometimes it even freezes. If I reboot it, then it works fine. So I have to turn on my PC twice each time I want to use it in order to make it work properly. This is pretty uncomfortable and it is indeed an unexpected behaviour. I don't know what the problem could be and how to solve it.
I ignore what information you need to help me out with this, but below I give you some of the specifications of my PC:
OS: Windows 7 Ultimate Service Pack 1
Processor: AMD A10-5800K APU 3.80 GHz
RAM: 8GB DDR3
GPU: AMD Radeon R7 200 Series